theorem reveqd (_G: wff) (_l1 _l2: nat): $ _G -> _l1 = _l2 $ > $ _G -> rev _l1 = rev _l2 $;
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hyp _lh | _G -> _l1 = _l2 |
|
| 2 | 1 | lreceq3d | _G -> lrec 0 (\\ a, \\ z, \ ih, ih |> a) _l1 = lrec 0 (\\ a, \\ z, \ ih, ih |> a) _l2 |
| 3 | 2 | conv rev | _G -> rev _l1 = rev _l2 |